swing插图问题

private class MyPanel extends JPanel {//设置背景
         public void paintComponent(Graphics g) {
          Graphics2D g2 = (Graphics2D)g;
       super.paintComponent(g);
       Image img = Toolkit.getDefaultToolkit().getImage("image\\10.jpg");

       g2.drawImage(img, 0, 0, this.getWidth(), this.getHeight(), this);}
我在SWING界面中插入图片时，图片好模糊，不清晰，请指教，谢谢……